Mid-South Gardening: Help!! My Hibiscus is ??????????

Recently planted a Hibiscus that a friend gave me. It is incredibly beautiful. Planted in the right location--pretty sunny. It has bloomed consistenly for weeks and suddenly . . . individual braches are starting to wither. It seems perfectly healthy otherwise. Any suggestions??

Was the plant in a pot or given as a bareroot division from your friends garden? If it was barerooted, then it is possibly just transplant shock. Otherwise I have no clue. Do you have a picture you could post. Hope you find the answer soon.